부산대학교 도서관

For determining the in-plane buckling resistance of a concrete-fi lled steel tubular (CFST) arch, the current technical code GB50923-2013 specifi es the use of an equivalent beam-column method which ignores the eff ect of rise-to-span ratio. This may induce a gap between the calculated result and actual stability capacity. In this study, a FE model is used to predict the buckling behavior of CFST truss arches subjected to uniformly distributed loads. The infl uence of rise-to-span ratio on the capacity of truss arches is investigated, and it is found that the stability capacity reduces as rise-to-span ratio declines. Besides, the calculations of equivalent slenderness ratio for diff erent truss sections are made to consider the eff ect of shear deformation. Moreover, based on FE results, a new design equation is proposed to predict the in-plane strength of CFST parabolic truss arches under uniformly distributed loads.